97231811 has 2 divisors, whose sum is σ = 97231812. Its totient is φ = 97231810.

The previous prime is 97231763. The next prime is 97231817. The reversal of 97231811 is 11813279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97231811 - 2⁶ = 97231747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97231817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48615905 + 48615906.

It is an arithmetic number, because the mean of its divisors is an integer number (48615906).

Almost surely, 2^97231811 is an apocalyptic number.

97231811 is a deficient number, since it is larger than the sum of its proper divisors (1).

97231811 is an equidigital number, since it uses as much as digits as its factorization.

97231811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The square root of 97231811 is about 9860.6191996243. The cubic root of 97231811 is about 459.8358125442.

The spelling of 97231811 in words is "ninety-seven million, two hundred thirty-one thousand, eight hundred eleven".